This is the 13174th most frequent Turkish word.
katıdır
"Katıdır" means "it is solid" in English.
In this sentence, 'katıdır' is used as an adjective to describe the strictness of rules.
Kurallar oldukça katıdır.
The rules are quite strict.
Here, 'katıdır' describes the consistency or density of the cake.
Bu pasta gerçekten çok katıdır.
This cake is indeed very dense.
In this context, 'katıdır' refers to the harshness or difficulty of the living conditions.